<template>
  <!-- 连接蓝牙 -->
  <view class="bluetoothSetting">
    <topBar />
    <view class="page-nav">
      <button @click="searchBle">搜索蓝牙</button>
      <view 
        style="margin-top: 30upx;" 
        :key="index" 
        v-for="(item,index) in devices"
      >
        <button style="width: 400upx; color: #0081FF;" @click="onConn(item)">
          {{item.name}}
        </button>
      </view>
      <button style="margin-top: 100upx;" @click="senBleLabel()">
        标签打印
      </button>
      <textarea 
        @blur="bindTextAreaBlur" 
        auto-height 
        placeholder-style="color:#F76260" 
        placeholder="请输入票据信息" 
        v-model="piaojuText"
      />
      <button style="margin-top: 100upx;" @click="senBleLabel2()">
        票据打印
      </button>
    </view>
		<view class="page-nav">
			<!-- 蓝牙开关 -->
			<flex class="page-label">连接打印机</flex>
			<flex class="uni-form-item uni-column" justify="space-between">
				<view class="uni-label">蓝牙: </view>
				<flex class="uni-input-text" justify="flex-end">
					<switch class="uni-switch" :checked="isEnabled" @change="isEnabledChange" />
				</flex>
			</flex>
		</view>
  </view>
</template>
<script>
var tsc = require('../../utils/gprint/tsc.js')
var esc = require('../../utils/gprint/esc.js')

export default {
  name: "Bluetooth",
  data() {
    return {
			isEnabled: false, // 蓝牙开关
      devices: [],
      currDev: null,
      connId: '',
      piaojuText:'',
    };
  },
  components: {},
  onLoad() {
		this.blueadapterCheck()
	},
  computed: {},
  methods: {
			// 蓝牙开关
			isEnabledChange(val) {
				this.isEnabled = val.detail.value
			},

			blueadapterCheck() {
				const BluetoothAdapter = plus.android.importClass('android.bluetooth.BluetoothAdapter') // 引入Java 蓝牙类
				const blueadapter = BluetoothAdapter.getDefaultAdapter()
				if (blueadapter) {
					// 判断蓝牙是否开启
					if (blueadapter.isEnabled()) {
						// uni.showToast({title: '蓝牙已打开', icon: 'success'})
						this.isEnabled = true
					} else {
						uni.showModal({
							title: '提示',
							content: '蓝牙尚未打开，是否打开蓝牙',
							showCancel: true,
							cancelText: '取消',
							confirmText: '确定',
							success(res) {
								// 点击确定后通过系统打开蓝牙
								if (res.confirm) {
									const blueadapter = BluetoothAdapter.getDefaultAdapter();
									if (blueadapter != null) {
										this.isEnabled = true
										return blueadapter.enable()
									}
								} else {
									// 点击取消什么也不做
									// console.log("点击了取消")
									uni.showToast({title: '点击了取消', icon: 'error'})
								}
							}
						})
					}
				}
			},

			destroyed() {
				console.log("destroyed----------")
				if (this.connId != '') {
					uni.closeBLEConnection({
						deviceId: this.connId,
						success(res) {
							console.log(res)
						}
					})
				}
			},

			searchBle() {
				var that = this
				console.log("initBule")
				uni.openBluetoothAdapter({
					success(res) {
						console.log("打开 蓝牙模块")
						console.log(res)
						that.onDevice()
						uni.getBluetoothAdapterState({
							success: function(res) {
								console.log(res)
								if (res.available) {
									if (res.discovering) {
										that.stopFindBule()
									}
									//搜索蓝牙
									//开始搜寻附近的蓝牙外围设备
									console.log("开始搜寻附近的蓝牙外围设备")
									uni.startBluetoothDevicesDiscovery({
										success(res) {
											console.log(res)
										}
									})

								} else {
									console.log('本机蓝牙不可用')
								}
							},
						})
					}
				})
			},

			onDevice(){
				console.log("监听寻找到新设备的事件---------------")
				var that = this
				//监听寻找到新设备的事件
				uni.onBluetoothDeviceFound(function(devices) {
					console.log('--------------new-----------------------'+JSON.stringify(devices))
					var re = JSON.parse(JSON.stringify(devices))
					console.log(re.devices[0].name + "  " + re.devices[0].deviceId)
						let name = re.devices[0].name
						if (name != "未知设备") {
							let deviceId = re.devices[0].deviceId
							that.devices.push({
								name: name,
								deviceId: deviceId,
								services: []
							})
						}
				})
			},
			
			stopFindBule() {
				console.log("停止搜寻附近的蓝牙外围设备---------------")
				uni.stopBluetoothDevicesDiscovery({
					success(res) {
						console.log(res)
					}
				})
			},
			// 连接蓝牙
			onConn(item) {
				var that = this
				console.log("连接蓝牙---------------" + item.deviceId)
				let deviceId = item.deviceId
				uni.createBLEConnection({
					deviceId: deviceId,
					complete(res) {
						if (res.errMsg == "createBLEConnection:ok") {
							console.log("连接蓝牙-[" + item.name + "]--成功")
              uni.showToast({title: `连接成功`, icon: 'success'})
							that.connId = deviceId;
							that.currDev = item
							setTimeout(function() {
								console.log('deviceId----1', deviceId)
								that.getBLEServices(deviceId)
							}, 2000)
						} else {
							console.log(res)
						}
						//连接成功 关闭搜索
						that.stopFindBule()

					},
				})
			},

      // 获取蓝牙设备所有服务
			getBLEServices(_deviceId, callBack = () => {}) {
				var that = this;
				let deviceId = _deviceId
				console.log("获取蓝牙设备所有服务(service)。---------------")

				uni.getBLEDeviceServices({
					// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
					deviceId: deviceId,
					complete(res) {
						console.log('complete-res---', res)
						let serviceId = ""

						for (var s = 0; s < res.services.length; s++) {
							console.log(res.services[s].uuid)
							let serviceId = res.services[s].uuid
							uni.getBLEDeviceCharacteristics({
								// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
								deviceId: deviceId,
								// 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
								serviceId: serviceId,
								success(res) {
									var re = JSON.parse(JSON.stringify(res))
									console.log('getBLEDeviceCharacteristics---', re)
									console.log('deviceId = [' + deviceId + ']  serviceId = [' + serviceId + ']')
									for (var c = 0; c < re.characteristics.length; c++) {
										if (re.characteristics[c].properties.write == true) {
											let uuid = re.characteristics[c].uuid
											console.log(' deviceId = [' + deviceId + ']  serviceId = [' + serviceId + '] characteristics=[' +
												uuid)

											for (var index in that.devices) {
												if (that.devices[index].deviceId == deviceId) {
													that.devices[index].services.push({
														serviceId: serviceId,
														characteristicId: uuid
													})
													break
												}

											}
											console.log(JSON.stringify(that.devices))

										}
									}
									callBack()
								}
							})
						}
					},
					fail(res) {
						console.log(res)
					},
				})

			},

			senBlData(deviceId, serviceId, characteristicId,uint8Array) {
				console.log('************deviceId = [' + deviceId + ']  serviceId = [' + serviceId + '] characteristics=[' +characteristicId+ "]")
				console.log('************uint8Array=' + uint8Array)
				let uint8Buf = Array.from(uint8Array);
				function split_array(datas,size){
					var result = {};
					var j = 0
					for (var i = 0; i < datas.length; i += size) {
						result[j] = datas.slice(i, i + size)
						j++
					}
					console.log(result)
					return result
				}
				let sendloop = split_array(uint8Buf, 20);
				// console.log(sendloop.length)
				function realWriteData(sendloop, i) {
					var data = sendloop[i]
					if(typeof(data) == "undefined"){
						return
					}
					console.log("第【" + i + "】次写数据"+data)
					var buffer = new ArrayBuffer(data.length)
					var dataView = new DataView(buffer)
					for (var j = 0; j < data.length; j++) {
						dataView.setUint8(j, data[j]);
					}
					uni.writeBLECharacteristicValue({
						deviceId,
						serviceId,
						characteristicId,
						value: buffer,
						success(res) {
							realWriteData(sendloop, i + 1);
						}
					})
				}
        var i = 0;
				realWriteData(sendloop, i);
			},
      
			senBleLabel() {
				//标签模式
				let deviceId = this.currDev.deviceId;
				let serviceId = this.currDev.services[0].serviceId;
				let characteristicId = this.currDev.services[0].characteristicId;
				var command = tsc.jpPrinter.createNew()
				// console.log(command)
        command.setSize(40, 30)
        command.setGap(2)
        command.setCls()
        command.setText(50, 10, "TSS24.BF2", 1, 1, "打印测试")
        command.setQR(50, 50, "L", 5, "A", "977767937@qq.com")
				command.setPagePrint()
				this.senBlData(deviceId, serviceId, characteristicId,command.getData())
			},

			senBleLabel2(){
				//票据模式
				let deviceId = this.currDev.deviceId;
				let serviceId = this.currDev.services[0].serviceId;
				let characteristicId = this.currDev.services[0].characteristicId;
				var command = esc.jpPrinter.createNew()
				command.init()
        // command.setText(this.piaojuText);
        command.setText('\r\n\r\n下单小结\r\n订单信息：\r\n订单编号：YH-1212122121\r\n订单号码：3379*100，56*100，3730*200\r\n订单金额：￥160.00\r\n订单日期：2023/02/27 11：00\r\n\r\n\r\n\r\n');
        command.setPrintAndFeedRow(1)
				this.senBlData(deviceId, serviceId, characteristicId, command.getData())
			},
      
      bindTextAreaBlur() {}
		}
};
</script>
<style lang="scss" scoped>
.bluetoothSetting {

}
</style>
